package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    /**
     * 用户登录
     */

    @Autowired
    private EmployeeService employeeService;

    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper  = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
        //3、如果没有查询到则返回登录失败结果
        if (emp == null){
            return R.error("找不到该用户！");
        }
        //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)){
            return R.error("密码错误!");
        }
        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus()==0){
            return R.error("该账号已被封禁!");
        }
        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 用户退出
     */
    @PostMapping("/logout")
    public R<String> loginout(HttpServletRequest request){
        request.getSession().removeAttribute("employee");
        return R.success("账号已退出！");

    }


    /**
     *新增员工
     */

    @PostMapping
    public R<String> save(@RequestBody Employee employee){
        log.info("新增加的员工信息是:{}",employee.toString());
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //MyMetaObjecthandler已经设置这些公共字段
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setCreateUser(empId);
        //  employee.setUpdateUser(empId);
        employeeService.save(employee);
        return R.success("添加员工成功！");
    }

    /**
     * 分页显示员工信息
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page={},pageSize={},name={}",page,pageSize,name);
        //构造分页构造器
        Page pageInfo = new Page(page,pageSize);
        //构造条件构造器(根据用户名查询员工)
        LambdaQueryWrapper<Employee> lambdaQueryWrapper = new LambdaQueryWrapper();
        lambdaQueryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        lambdaQueryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行条件查询
        employeeService.page(pageInfo,lambdaQueryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工的信息(通用的修改方法)
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        //设置更改时间
        employee.setUpdateTime(LocalDateTime.now());
        //从session保存的信息中获取对应的数据（修改人）
        Long empId = (Long)request.getSession().getAttribute("employee");
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return  R.success("修改员工信息成功！");
    }

    /**
     * 编辑员工信息首先要根据id查询用户(编辑数据的回显)
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee id1 = employeeService.getById(id);
        if (id1 != null) {
            return R.success(id1);
        }
        return R.error("没有查询到该员工信息");

    }


}
